Terminal-equipped electric wire

Abstract

A terminal-equipped electric wire (1) includes: an electric wire (10) including a conductor (11) and an insulating coating (12) covering the conductor (11); and a crimp terminal (20) that includes a conductor crimp portion (22) that crimps the conductor (11), a coated fastening portion (23) that includes a first fastening piece (28a) and a second fastening piece (28b) and fastens the insulating coating (12) of the electric wire (10) by the first fastening piece (28a) and the second fastening piece (28b), and an intermediate portion (25) that connects the conductor crimp portion (22) and the coated fastening portion (23), an outer surface (28c) of the first fastening piece (28a) and an outer surface (28d) of the second fastening piece (28b) are in contact with each other, and an upper end of a side wall (30) of the intermediate portion (25) is higher than an upper end of the conductor (11).

Description

Technical Field

[0001] The present invention relates to a wire equipped with terminals. Background Art

[0002] A wire harness for an automobile includes a plurality of wires equipped with terminals. The wire equipped with terminals includes a wire and a crimp terminal crimped to the wire, and the crimp terminal is accommodated in a terminal accommodation chamber of a connector housing. In the prior art, in order to suppress corrosion caused by the influence of water splash, condensation, etc., it is known to coat an anti-corrosion material between the core wire (conductor) of the wire and the crimp terminal.

[0003] Patent Document JP2020-191196A discloses a wire equipped with terminals including a crimp terminal and an anti-corrosion material. The crimp terminal includes a coated crimp portion crimped to a coating. The anti-corrosion material integrally covers the area from the end of the core wire to the side surface of the coated crimp portion, and protects the core wire from the influence of the external space. The coated crimp portion includes a bottom wall portion, a first fastening piece, and a second fastening piece, and each of the bottom wall portion, the first fastening piece, and the second fastening piece is tightly attached to the coating, and the coated crimp portion is crimped to the coating in a state where the first fastening piece is stacked on the end portion of the second fastening piece. The anti-corrosion material closes the gap surrounded by the end surface of the second fastening piece, the inner surface of the first fastening piece, and the outer surface of the coating from the core wire crimp portion side. According to the wire equipped with terminals described in Patent Document JP2020-191196A, water penetration through the coated crimp portion can be suppressed. Summary of the Invention

[0004] However, in some cases, a wire having a size smaller than the optimal size of the crimp terminal is crimped. However, in this case, when crimping is performed while overlapping the first fastening piece on the end portion of the second fastening piece, there may be a risk that the side wall of the intermediate portion connecting the core wire crimp portion and the coated crimp portion is wound inward together with the first fastening piece or the second fastening piece. However, when the side wall of the intermediate portion collapses inward along the wire, when a liquid anti-corrosion material is coated, there may be a risk that the anti-corrosion material no longer stays inside the side wall and drips along the outer surface of the side wall.

[0005] The present invention is made in view of the problems existing in the prior art. In addition, an object of the present invention is to provide a wire equipped with terminals that can prevent the anti-corrosion material from dripping from the side wall of the intermediate portion.

[0006] The wire with a terminal according to one aspect of the present invention includes: a wire including a conductor and an insulating coating covering the conductor; and a crimp terminal including a conductor crimping portion for crimping the conductor, a coating fastening portion including a first fastening piece and a second fastening piece and fastening the insulating coating of the wire by the first fastening piece and the second fastening piece, and an intermediate portion connecting the conductor crimping portion and the coating fastening portion, wherein an outer surface of the first fastening piece and an outer surface of the second fastening piece are in contact with each other, and an upper end of a side wall of the intermediate portion is higher than an upper end of the conductor.

[0007] According to the present invention, it is possible to provide a wire with a terminal that can prevent an anti-corrosion material from dripping from a side wall of an intermediate portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a perspective view showing an example of a wire with a terminal according to the present embodiment.

[0009] Figure 2 is a side view showing an example of a wire with a terminal according to the present embodiment.

[0010] Figure 3 is along Figure 2 a cross-sectional view taken along line III-III in

[0011] Figure 4 is along Figure 2 a cross-sectional view taken along line IV-IV in DETAILED DESCRIPTION

[0012] Referring to the accompanying drawings, a wire with a terminal according to the present embodiment will be described in detail. Note that the dimensional ratios in the drawings are exaggerated for the purpose of explanation and may be different from the actual ratios.

[0013] Referring to Figures 1 to 4 a description will be given of a wire with a terminal 1 according to the present embodiment. Figure 1 is a perspective view showing an example of a wire with a terminal 1 according to the present embodiment. Figure 2 is a side view showing an example of a wire with a terminal 1 according to the present embodiment. Figure 3 is along Figure 2 a cross-sectional view taken along line III-III in Figure 4 is along Figure 2 a cross-sectional view taken along line IV-IV in. As Figures 1 to 4 shown, the wire with a terminal 1 according to the present embodiment includes a wire 10, a crimp terminal 20, and an anti-corrosion material 40.

[0014] The electric wire 10 includes a conductor 11 and an insulating coating 12 that covers the outer periphery of the conductor 11. The conductor 11 includes a plurality of strands 13. At the end of the electric wire 10, the insulating coating 12 is stripped, and the conductor 11 is exposed from the insulating coating 12. The conductor 11 may include a collective strand obtained by bundling a plurality of strands 13. The conductor 11 may be composed of a single strand or a composite strand obtained by stranding a plurality of collective strands.

[0015] The conductor 11 may contain copper or aluminum as a main component. Note that the main component means the metal component having the highest molar ratio among the metal components contained in the conductor 11. The metal component having the highest molar ratio among the metal components contained in the conductor 11 may be present at a molar ratio of 50% or more, 60% or more, 70% or more, 80% or more, 90% or more, or 95% or more. The material of the conductor 11 may be, for example, copper, aluminum, or an alloy containing these metal components. In consideration of weight reduction, the conductor 11 is preferably formed of aluminum or an aluminum alloy.

[0016] As the material of the insulating coating 12, a thermoplastic resin capable of exhibiting electrical insulation properties can be used. For example, the insulating coating 12 may contain at least one of an olefin-based resin and polyvinyl chloride. The olefin-based resin may include at least one resin selected from the group consisting of, for example, polyethylene (PE), polypropylene (PP), ethylene copolymers, and propylene copolymers.

[0017] The crimp terminal 20 includes a terminal connection portion 21, a conductor crimping portion 22, a coating fastening portion 23, a first intermediate portion 24, and a second intermediate portion 25. The terminal connection portion 21 is provided at one end of the crimp terminal 20, and the conductor crimping portion 22 is provided at the other end of the crimp terminal 20. Note that in this specification, it is assumed that the side of the crimp terminal 20 where the terminal connection portion 21 is provided is the front side and the side of the crimp terminal 20 where the coating fastening portion 23 is provided is the rear side for description.

[0018] The terminal connection portion 21 is provided at the front portion in the length direction of the crimp terminal 20 and is configured to be connected to a mating terminal (not shown). When the terminal connection portion 21 is connected to the terminal connection portion of the mating terminal, the crimp terminal 20 is mechanically and electrically connected to the mating terminal. The terminal connection portion 21 has a box-like shape with a cylindrical space inside and houses a spring piece for engaging with the mating terminal.

[0019] The conductor crimping portion 22 is provided on the rear side in the longitudinal direction of the crimp terminal 20 with respect to the terminal connection portion 21. Specifically, the conductor crimping portion 22 is provided between the terminal connection portion 21 and the covering fastening portion 23 in the longitudinal direction of the crimp terminal 20. The conductor crimping portion 22 crimps the conductor 11 exposed at the end of the electric wire 10. The conductor crimping portion 22 fastens and crimps the conductor 11 of the electric wire 10 and is in direct contact with the conductor 11. The conductor crimping portion 22 includes a bottom plate 26 and a pair of conductor fastening pieces 27. The conductor 11 is placed on the bottom plate 26, and the pair of conductor fastening pieces 27 are connected to the bottom plate 26 and wrap and fasten the conductor 11 in the radial direction. The pair of conductor fastening pieces 27 extend upward from the edge portions on the right and left sides of the bottom plate 26. Before crimping the electric wire 10, the conductor crimping portion 22 is formed in a U-shaped shape in the sectional view by the bottom plate 26 and the pair of conductor fastening pieces 27.

[0020] The covering fastening portion 23 is provided on the rear side in the longitudinal direction of the crimp terminal 20 with respect to the conductor crimping portion 22. The covering fastening portion 23 fastens the insulating covering 12 provided at the end of the electric wire 10 and is in direct contact with the insulating covering 12. The covering fastening portion 23 includes a bottom plate 26 and a pair of fastening pieces 28. The electric wire 10 is placed on the bottom plate 26, and the pair of fastening pieces 28 are connected to the bottom plate 26 and wrap and fasten the electric wire 10 in the radial direction. The pair of fastening pieces 28 include a first fastening piece 28a and a second fastening piece 28b. The first fastening piece 28a is connected to one end portion of the bottom plate 26, and the second fastening piece 28b is connected to the other end portion of the bottom plate 26. Before crimping the electric wire 10, the first fastening piece 28a and the second fastening piece 28b extend upward from the edge portions on the left and right sides of the bottom plate 26, and the bottom plate 26, the first fastening piece 28a, and the second fastening piece 28b form a U-shaped or V-shaped shape in the sectional view. In addition, the covering fastening portion 23 fastens the insulating covering 12 of the electric wire 10 by the first fastening piece 28a and the second fastening piece 28b.

[0021] In the electric wire 1 equipped with the terminal, the outer surface 28c of the first fastening piece 28a and the outer surface 28d of the second fastening piece 28b are in contact with each other. Thus, unlike fastening by overlapping, the first fastening piece 28a and the second fastening piece 28b do not bend along the circumferential portion of the electric wire 10. Therefore, when fastening by the first fastening piece 28a and the second fastening piece 28b, it is possible to prevent the side wall 30 of the second intermediate portion 25 from caving in and bending inward along with the first fastening piece 28a and the second fastening piece 28b. Thus, compared with the state before the insulating covering 12 of the electric wire 10 is fastened, the height of the side wall 30 of the second intermediate portion 25 can be maintained. In addition, by preventing the first fastening piece 28a and the second fastening piece 28b from caving in excessively inward beyond the side wall 30 of the second intermediate portion 25, tearing at the boundary between the side wall 30 of the second intermediate portion 25 and the fastening piece 28 can be suppressed, and shear cracks can be prevented from occurring.

[0022] The covering fastening portion 23 can fasten the insulation covering 12 of the electric wire 10 such that the outer surface 28c of the first fastening piece 28a and the outer surface 28d of the second fastening piece 28b are in contact with the insulation covering 12. Thereby, it is possible to prevent the end surfaces 28e of the first fastening piece 28a and 28f of the second fastening piece 28b from piercing the insulation covering 12 and damaging the insulation covering 12. Thereby, when the conductor 11 is exposed from the insulation covering 12, it is possible to suppress water from seeping into the electric wire 10 and suppress corrosion. Note that the end surface 28e of the first fastening piece 28a can be in contact with the insulation covering 12 and can also be in contact with the inner surface 28g of the first fastening piece 28a. Similarly, the end surface 28f of the second fastening piece 28b can be in contact with the insulation covering 12 and can also be in contact with the inner surface 28h of the second fastening piece 28b.

[0023] The crimping of the conductor crimping portion 22 and the covering fastening portion 23 is performed by fastening the conductor 11 through the conductor crimping portion 22 and fastening the electric wire 10 covered with the insulation covering 12 through the covering fastening portion 23 using an anvil and a crimper (not shown), and thus it is possible to manufacture the electric wire 1 equipped with the terminal.

[0024] The first intermediate portion 24 connects the terminal connection portion 21 and the conductor crimping portion 22 to each other in the longitudinal direction of the crimping terminal 20. The first intermediate portion 24 includes a bottom plate 26 and a pair of side walls extending upward from the edge portions on the right and left sides of the bottom plate 26. The side walls of the first intermediate portion 24 are configured to be lower than the side walls of the terminal connection portion 21 and the pair of conductor fastening pieces 27 of the conductor crimping portion 22. The first intermediate portion 24 is formed of the bottom plate 26 and the pair of side walls to have a U shape or a V shape in a cross-sectional view.

[0025] The second intermediate portion 25 connects the conductor crimping portion 22 and the covering fastening portion 23 to each other in the longitudinal direction of the crimping terminal 20. The second intermediate portion 25 includes a bottom plate 26 and a pair of side walls 30 extending upward from the edge portions on the right and left sides of the bottom plate 26. The side walls of the second intermediate portion 25 are configured to be lower than the pair of conductor fastening pieces 27 of the conductor crimping portion 22 and the pair of fastening pieces 28 of the covering fastening portion 23. The second intermediate portion 25 is formed of the bottom plate 26 and the pair of side walls 30 to have a U shape or a V shape in a cross-sectional view.

[0026] In this embodiment, the crimp terminal 20 is formed by bending a plate-like member. Therefore, the bottom plate 26 is continuously formed in a common sheet form from the bottom plate 26 of the terminal connection portion 21 to the bottom plate 26 of the covering fastening portion 23. In addition, the front end and the rear end of the lower side wall of the first intermediate portion 24 are continuously formed with the lower half of the rear end of the side wall of the terminal connection portion 21 and the lower half of the front end of each of the pair of conductor fastening pieces 27 of the conductor crimping portion 22, respectively. The front end and the rear end of the lower side wall 30 of the second intermediate portion 25 are continuously formed with the lower half of the rear end of each of the pair of conductor fastening pieces 27 of the conductor crimping portion 22 and the lower half of the front end of each of the pair of fastening pieces 28 of the covering fastening portion 23, respectively.

[0027] The crimp terminal 20 is formed of a conductive material. The material for forming the crimp terminal 20 may include at least one or more metal components selected from the group consisting of, for example, copper, aluminum, iron, and magnesium. The surface of the crimp terminal 20 may be plated or may not be plated.

[0028] The crimp terminal 20 may contain copper or aluminum as a main component. Note that the main component means the metal component having the highest molar ratio among the metal components contained in the crimp terminal 20. The metal component having the highest molar ratio among the metal components contained in the crimp terminal 20 may be present at a molar ratio of 50% or more, 60% or more, 70% or more, 80% or more, 90% or more, or 95% or more. The material of the crimp terminal 20 may be, for example, copper, aluminum, or an alloy containing these metal components. Considering conductivity, the crimp terminal 20 is preferably formed of copper or a copper alloy.

[0029] The anticorrosive material 40 is provided at the portion where the conductor 11 and the crimp terminal 20 are in contact with each other. When moisture adheres between the conductor 11 of the electric wire 10 and the crimp terminal 20, corrosion is likely to occur. Therefore, when the anticorrosive material 40 is provided at the contact portion between the conductor 11 and the crimp terminal 20, it is possible to prevent moisture from adhering between the conductor 11 of the electric wire 10 and the crimp terminal 20, and to suppress corrosion. In particular, when different types of metal components are used for the conductor 11 and the crimp terminal 20, for example, when the conductor 11 is aluminum or an aluminum alloy and the crimp terminal 20 is copper or a copper alloy, corrosion is likely to occur. Therefore, corrosion can be suppressed by providing the anticorrosive material 40.

[0030] As Figure 1 shown, the anticorrosive material 40 is provided from the first intermediate portion 24 to the covering fastening portion 23. Specifically, the anticorrosive material 40 is provided to the first intermediate portion 24, the conductor crimping portion 22, the second intermediate portion 25, and the covering fastening portion 23.

[0031] In the first intermediate portion 24, the region near the end of the conductor 11 is more exposed than the region near the conductor crimping portion 22, and the anticorrosive material 40 covers the end of the conductor 11.

[0032] In the conductor crimping portion 22, the surface of the outer periphery of the conductor 11 is covered with the conductor crimping portion 22, and the anticorrosive material 40 covers the gap between the pair of conductor fastening pieces 27. Thereby, water infiltration into the inside of the pair of conductor fastening pieces 27 can be suppressed. In the conductor crimping portion 22, since the conductor 11 is surrounded by the conductor crimping portion 22, it is not necessary to directly contact the anticorrosive material 40.

[0033] In the second intermediate portion 25, the exposed conductor 11 and the electric wire 10 in which the conductor 11 is covered with the insulation coating 12 are provided, and the anticorrosive material 40 covers the conductor 11 and the insulation coating 12. In the second intermediate portion 25, there is a space surrounded by the conductor crimping portion 22, the coating fastening portion 23, and the side wall 30 of the second intermediate portion 25, and the anticorrosive material 40 covers the electric wire 10 from above in this space.

[0034] As Figure 2 and Figure 3 shown, the upper end of the side wall 30 of the second intermediate portion 25 is higher than the upper end of the conductor 11. Even when the upper end of the side wall 30 is lower than the upper end of the conductor 11, the anticorrosive material 40 can be held in the gap formed between the conductor 11 and the side wall 30, and the anticorrosive material 40 can be held on the conductor 11 due to the surface tension of the anticorrosive material 40. However, when the upper end of the side wall 30 is higher than the upper end of the conductor 11, the side wall 30 of the second intermediate portion 25 serves as a wall for holding the anticorrosive material 40. Therefore, even when the anticorrosive material 40 is coated on the conductor 11, the anticorrosive material 40 can be easily held by the side wall 30. Thereby, it is possible to prevent the anticorrosive material 40 from dripping over the side wall 30 to the outer surface of the side wall 30.

[0035] The upper end of the side wall 30 of the second intermediate portion 25 may be higher than the upper end of the electric wire 10 covered with the insulation coating 12. Thereby, even when the anticorrosive material 40 is coated on the electric wire 10, the anticorrosive material 40 can be easily held by the side wall 30. Thereby, it is possible to further prevent the anticorrosive material 40 from dripping over the side wall 30 onto the outer surface of the side wall 30.

[0036] As Figure 3 shown, the side wall 30 of the second intermediate portion 25 extends upward. Thereby, compared with the case where the side wall 30 of the second intermediate portion 25 surrounds the electric wire 10, the upper end of the side wall 30 is higher. Therefore, the amount of the anticorrosive material 40 remaining on the electric wire 10 can be increased. Therefore, it is possible to further prevent the anticorrosive material 40 from dripping over the side wall 30 onto the outer surface of the side wall 30. The side wall 30 of the second intermediate portion 25 may extend straight upward.

[0037] The height of the side wall 30 of the second intermediate portion 25 is higher on the covering fastening portion 23 side than on the conductor crimping portion 22 side. In the second intermediate portion 25, the height of the electric wire 10 is higher on the covering fastening portion 23 side than on the conductor crimping portion 22 side. Therefore, when the height of the side wall 30 is higher on the covering fastening portion 23 side than on the conductor crimping portion 22 side, it is possible to further prevent the anticorrosive material 40 from dripping onto the outer surface of the side wall 30 across the side wall 30. Note that as approaching the covering fastening portion 23 from the conductor crimping portion 22, the height of the side wall 30 of the second intermediate portion 25 may become higher.

[0038] In the second intermediate portion 25, the anticorrosive material 40 may be in contact with the front surface of the fastening piece 28. In the above-mentioned electric wire 1 with a terminal assembled thereto, even when the portion of the conductor 11 covered with the insulating coating 12 is reduced in the second intermediate portion 25 due to manufacturing errors, the anticorrosive material 40 is applied between the conductor 11 of the electric wire 10 and the crimp terminal 20. Therefore, it is possible to further suppress corrosion caused by moisture adhesion.

[0039] The anticorrosive material 40 may be provided to fill the first gap 28i, which is a gap surrounded by the inner surface 28g of the first fastening piece 28a, the end surface 28e of the first fastening piece 28a, and the insulating coating 12. In addition, the anticorrosive material 40 may be provided to fill the second gap 28j, which is a gap surrounded by the inner surface 28h of the second fastening piece 28b, the end surface 28f of the second fastening piece 28b, and the insulating coating 12. In addition, the anticorrosive material 40 may be provided to fill the third gap 28k, which is a gap surrounded by the outer surface 28c of the first fastening piece 28a, the outer surface 28d of the second fastening piece 28b, and the insulating coating 12. When the anticorrosive material 40 is applied to fill the first gap 28i, the second gap 28j, and the third gap 28k, it is possible to suppress moisture from infiltrating into the second intermediate portion 25 through these gaps.

[0040] As Figure 4 shown, the end of the first fastening piece 28a is curled with the inner surface 28g facing inward, and a fourth gap 28l formed by the inner surface 28g of the first fastening piece 28a is provided at the end of the first fastening piece 28a. The end surface 28e of the first fastening piece 28a may or may not be in contact with the inner surface 28g of the first fastening piece 28a. The end of the second fastening piece 28b is curled with the inner surface 28h facing inward, and a fifth gap 28m formed by the inner surface 28h of the second fastening piece 28b is provided at the end of the second fastening piece 28b. The end surface 28f of the second fastening piece 28b may or may not be in contact with the inner surface 28h of the second fastening piece 28b.

[0041] The anticorrosive material 40 can be arranged to fill at least a part of one of the fourth gap 28l and the fifth gap 28m. The anticorrosive material 40 may not fill the fourth gap 28l, or may fill the entire fourth gap 28l. In addition, the anticorrosive material 40 may not fill the fifth gap 28m, or may fill the entire fifth gap 28m. The anticorrosive material 40 may or may not be provided on the surface on the upper side of the contact portion where the outer surface 28c of the first fastening piece 28a and the outer surface 28d of the second fastening piece 28b are in contact with each other.

[0042] The anticorrosive material 40 can be formed by applying a liquid anticorrosive material to a portion where the conductor 11 and the crimp terminal 20 are in contact with each other (such as the contact portion between the conductor 11 and the second intermediate portion 25) and then curing it. The anticorrosive material 40 can be, for example, a resin obtained by curing at least one of a monomer and an oligomer. At least one of the monomer and the oligomer can be an ultraviolet curable resin or the like. The ultraviolet curable resin can be cured immediately when exposed to ultraviolet light.

[0043] As described above, the wire 1 with a terminal according to the present embodiment includes a wire 10 and a crimp terminal 20. The wire 10 includes a conductor 11 and an insulating coating 12 covering the conductor 11. The crimp terminal 20 includes: a conductor crimping portion 22 that crimps the conductor 11; a coating fastening portion 23 that includes a first fastening piece 28a and a second fastening piece 28b and fastens the insulating coating 12 of the wire 10 by the first fastening piece 28a and the second fastening piece 28b; and a second intermediate portion 25. The second intermediate portion 25 connects the conductor crimping portion 22 and the coating fastening portion 23 to each other. The outer surface 28c of the first fastening piece 28a is in contact with the outer surface 28d of the second fastening piece 28b. The upper end of the side wall 30 of the second intermediate portion 25 is higher than the upper end of the conductor 11.

[0044] In the wire 1 with a terminal, the outer surface 28c of the first fastening piece 28a is in contact with the outer surface 28d of the second fastening piece 28b. Therefore, when fastening by the first fastening piece 28a and the second fastening piece 28b, compared with the case of overlapping fastening, it is possible to prevent the side wall 30 of the second intermediate portion 25 from collapsing and bending inward along with the first fastening piece 28a and the second fastening piece 28b. Thus, compared with the state before the insulating coating 12 of the wire 10 is fastened, the height of the side wall 30 of the second intermediate portion 25 can be maintained.

[0045] The upper end of the side wall 30 of the second intermediate portion 25 is higher than the upper end of the conductor 11. Thus, the side wall 30 of the second intermediate portion 25 serves as a wall for holding the anticorrosive material 40, and thus even when the anticorrosive material 40 is coated on the conductor 11, the anticorrosive material 40 can be easily held by the side wall 30. Thereby, it is possible to prevent the anticorrosive material 40 from dripping onto the outer surface of the side wall 30 beyond the side wall 30.

[0046] Therefore, in the wire 1 with a terminal according to the present embodiment, it is possible to prevent the anticorrosive material 40 from dripping from the side wall 30 of the second intermediate portion 25. It is possible to prevent the anticorrosive material from adhering to the side surface or the rear surface of the crimp terminal 20, and thus it is possible to suppress its influence when inserted into the housing.

[0047] In addition, the outer surface 28c of the first fastening piece 28a is in contact with the outer surface 28d of the second fastening piece 28b, so that it is possible to prevent the first fastening piece 28a and the second fastening piece 28b from collapsing excessively inward beyond the side wall 30 of the second intermediate portion 25. Therefore, it is possible to suppress tearing at the boundary between the side wall 30 of the second intermediate portion 25 and the fastening piece 28 and prevent the generation of shear cracks.

[0048] The wire 1 with a terminal can be used for a wire harness used in a vehicle such as an automobile.

[0049] Although the present invention has been described above with reference to the embodiments, the present invention is not limited to these, and the structure of the components can be replaced with any structure having a similar function as long as they are within the scope of the claims.

Claims

1. An electric wire equipped with a terminal, comprising: An electric wire, the electric wire comprising: Conductors; and an insulating coating covering the conductor; and A crimping terminal, the crimping terminal comprising: A conductor crimping portion, the conductor crimping portion crimping the conductor; a coating fastening portion including a first fastening piece and a second fastening piece, and fastening the insulating coating of the electric wire by the first fastening piece and the second fastening piece; and an intermediate portion connecting the conductor crimping portion and the sheath fastening portion, wherein: The outer surface of the first fastening piece and the outer surface of the second fastening piece are in contact with each other, and An upper end of a side wall of the middle portion is higher than an upper end of the conductor.

2. The terminal-equipped electric wire according to claim 1, further comprising: An anti-corrosion material is provided at a portion where the conductor and the crimping terminal are in contact with each other.

3. The terminal-equipped electric wire according to claim 1 or 2, wherein: The side wall of the middle portion extends upward.

4. The terminal-equipped electric wire according to claim 1 or 2, wherein: The coating fastening portion fastens the insulating coating of the electric wire so that outer surfaces of the first fastening piece and outer surfaces of the second fastening piece are in contact with the insulating coating.

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